IIARD International Institute of Academic Research and Development

IIARD INTERNATIONAL JOURNAL OF GEOGRAPHY AND ENVIRONMENTAL MANAGEMENT (IJGEM )

E-ISSN 2504-8821
P-ISSN 2695-1878
VOL. 10 NO. 1 2024
DOI: https://doi.org/10.56201/ijgem.v10.no1.2024.pg114.125

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Occupational Exposure of Workers in Industrial Radiography at Selected Sites in Rivers State

E. C. Essien, G.O. Avwiri, A. O. Eshiemomoh

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Abstract

Assessment of radiological health hazard in industrial radiography practice in five (5) selected sites in Port Harcourt and its environs was carried out, using Digilert 200 Nuclear Radiation monitor and GPS 72H Garmin Geographical Positioning System. The mean exposure rates for the facilities (A, B, C, D & E) were 5.15mR/h respectively. The mean absorbed dose rates were 44684nGy/h respectively. Estimated average annual Effective dose equivalent obtained for outdoor exposures stood at 68.5mSv/y for all the facilities visited. The mean excess lifetime cancer risk calculated for these facilities were 239.7 x 10-3 respectively. The radiological parameters calculated for these facilities had values that were higher than the individual world permissible ICRP limit of 20mSv or 50mSv averaged over 5years. The Annual effective dose calculated for individual workers were lower than world standards while the excess lifetime cancer risks were slightly higher. The calculated organ doses show that the Testes have the highest doses while the liver recorded the least. The overall results from the study indicates that workers are exposed to doses exceeding limits, therefore employers and other stake holders should ensure that radiation workers are adequately trained, strict adherence to work procedures should be complied to, adequate shielding, optimization of distance, wearing of appropriate PPE and use of collimators should be embraced, inorder to keep doses as low as reasonably achievable (ALARA).

keywords:

Activity Concentration, Assessment, Exposure, Health Hazard

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References:

Abu-Jarad, F. (2008). Application of Radiation Sources in the Oil & Gas Industry & Shortages
in their Services. International Symposium on the Peaceful Applications of Nuclear
Technology in the GCC Countries, Jeddah 2008. Radioisotope Applications, session
10/3

Arogunjo, M. A., Farai, I. P., & Fuwape, I. A. (2004). Impact of Oil & Gas Industry to the
Natural Radioactivity Distribution in the Delta Region of Nigeria. Nig. Journal. Phys.,
16, 131-136.

Avwiri, G.O. (2011). Radiation: The good, the Bad & the Ugly in our Environment, 79 th
Inaugural lecture of the University of Port Harcourt.

Ekong G., Akpa T., Umaru I., Lumbi W., Akpanowo M., Benson N. (2019). Assessment of
Radiological Hazard Indices from Exposures to Background Ionizing Radiation
Measurements in South-South Nigeria. International Journal of Environmental
Monitoring & Analysis. 7, (2), 40-47. doi: 10.11648/j.ijema.20190702.11

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